Phonograph-reproducer.



H. H. DYKE.

PHONOGRAPH REPRODUCER.

APPLICATION FILED APR. 12, 1909.

1,036,469, Patented AugnOZO, 1912.

7 6' t v 11 V Z T @TATS i :IERBERT E. DYKE, OF WEST ORANGE, NEW JETRSEY, ASSIGNOR; BY MESNE ASSIGN- MENTS, T0 THOMAS EDISON, INCORPORATED, 012 WEST ORANGE, NEVT JERSEY.

A CORPORATION OF NEW-JERSEY.

EHONOGRALPH-BEPRODUCER.

Specification of-Iietters latent.

Patented Aug. 26 1912.

I Application filed April 12, 1909. Serial No. 489,467.

To all whom it may concern Be it known that I, HERBERT H. DYKE, a citizen of the United States, and a resident of West Orange, county of Essex, and State of New Jersey, have made a certain .new and ed claim.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar characters of reference indicate corresponding parts in the figures. I

Figure 1 is a side elevation, partly in section, of a phonograph reproducer showing my invention; and Fig. 2 is a fragmentary bottom view of the same.

Referring to the drawings, the reproducer comprises a sound box body '1 of the usual form and a diaphragm 2 secured between gaskets 3 by a clamping ring at threaded in a depending flange of the body 1. Thefloating weight 5 is pivoted at 6 to the pivot block 7, which is pivoted to the body 1 by the usual screw 8. The stylus lever 9 cm.- ries the stylus 10, and the lever 9 is pivoted. on the horizontal screw or stud 11, which is mounted in depending lugs12. The lugs 12 have formed integral therewith or secured thereto an arm 13 which extends parallel to the under surface of the floating weight 5.

-' T he lever 9 is connected to the center of the formed integral therewith or secured thereto a hollow stud or member 16 which is rotatably mounted in the floating weight. This stud forms the pivot about which the stud 11 and stylus 10 carried by the stylus lever are free to rotate in a direction transverse to the record groove. The arm 13 between the pivot 16 and the ears 12 provides a radius of such length that the stylus 10 in its movements transverse to the record groove will travel in an arc of considerable flatness, whereby greater freedom and a more uni-' versal movement of the stylus lever are attained. At the same time the pivot 11, about which the stylus lever oscillates in following the vertical movement of the stylus in tracking the record groove, is placed sufieiently near the stylus end of the lever 9, sothat the lever arm of the link 14 will be sufficiently greater than the lever arm of the stylus 10 to provide for proper amplification of the vertical movements of the stylus. 70

The stud 16 is formed with a vertical longitudinal passageway therethrougli, through -which the link 14: extends. By placing the stud 16 in the axis of the link ll and making the same hollow, the necessity of drilling a second hole or recess in the floating weight is eliminated. The hollow stud 16- may be mounted in the floating weight in any suitable way to provide for the easy rotation of the stud. As shown in the drawings, the stud 16 is formed with a screw thread on its bore, which engages with a screw thread on the periphery of a. thimble 17, which is formed at the upper end thereof with an annular flange 18 which rests upon a boss 19 on the upper surface of the float? ing weight 5.

Having now described my invention, what- I claim and tlesire to protect by Letters Pat-- ent is as follows:

In a phonograph reproducer, the combination with a diaphragm, of a floating weight having a. central aperture therethrough in line with the center of said diaphragm, a stud having a. central aperture therethrough mounted to rotate freely in said aperture, a hollow cylindrical member mounted within said stud and secured there said lever and diaphragm passing through to, said member having a flange upon its upper end bearing upon the upper surface stantially as described.

of said Weight, said stud having an arm This specification signed and witnessed upon its lower end at right angles to its this 10th day of April 1909.

the apertured stud and hollow member, subaxis, a pivot pin parallel to said diaphragm HERBERT H. DYKE. carried lpy said arm, a stylus lever pivoted Witnesses:

upon said pin, and a connection between DYER SMITH,

JOHN M. CANFIELD.

Eagles at this patent may be obtained for five cents each, by addressing the Commissione; of Patents,

Washington, D. C. I M 

